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Finding the Fourth Proportional to 18,157.96, 27,223.44 and 7,631.07

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Solution

The fourth proportional to 18,157.96, 27,223.44 and 7,631.07 is: 11,440.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,157.96 : 27,223.44 = 7,631.07 : x
  2. Step 2: Convert to fraction form
    18,157.96/27,223.44 = 7,631.07/x
  3. Step 3: Cross multiply
    18,157.96x = 27,223.44 × 7,631.07
  4. Step 4: Simplify right side
    18,157.96x = 207,743,976.28
  5. Step 5: Solve for x
    x = 207,743,976.28/18,157.96
  6. Step 6: Final answer
    x = 11,440.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.